BIL - SJU

$642 Find Cheap Flights from Billings to San Juan

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Billings to Luis Munoz Marin Intl departing on 8/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to San Juan Luis Munoz Marin Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Billings to San Juan, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Billings to San Juan, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$642
American Airlines
Tue 8/11Tue 8/18
BIL - SJU • 1 stop
Top airlines
Cheapest • from $642 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Billings and Luis Munoz Marin Intl. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $613 (round-trip)
Shortest trip • 8h 38m (one-way)
Insights
Insights
Insights
Insights
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Luis Munoz Marin Intl!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Billings to Luis Munoz Marin Intl (BIL-SJU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Billings to Luis Munoz Marin Intl that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Billings to Luis Munoz Marin Intl

Tue, Aug 11 - Tue, Aug 18
American Airlines Logo
12:21 pm - 11:07 pm
BIL
-
SJU
8h 46m
1 stop
American Airlines Logo
6:00 am - 10:44 pm
SJU
-
BIL
18h 44m
2 stops
$642American Airlines
Tue, Aug 11 - Mon, Aug 17
American Airlines Logo
12:21 pm - 11:07 pm
BIL
-
SJU
8h 46m
1 stop
American Airlines Logo
12:59 am - 11:51 am
SJU
-
BIL
12h 52m
1 stop
$669American Airlines
Wed, Jul 29 - Sat, Aug 1
United Airlines Logo
4:10 pm - 5:29 am
BIL
-
SJU
11h 19m
2 stops
United Airlines Logo
2:05 am - 1:22 pm
SJU
-
BIL
13h 17m
2 stops
$701United Airlines
Mon, Sep 28 - Thu, Oct 1
United Airlines Logo
5:00 am - 5:38 pm
BIL
-
SJU
10h 38m
1 stop
United Airlines Logo
2:00 pm - 9:00 pm
SJU
-
BIL
9h 00m
1 stop
$732United Airlines
Mon, Sep 28 - Wed, Sep 30
United Airlines Logo
5:00 am - 5:38 pm
BIL
-
SJU
10h 38m
1 stop
United Airlines Logo
1:00 am - 12:59 pm
SJU
-
BIL
13h 59m
2 stops
$754United Airlines
Wed, Jul 29 - Sun, Aug 2
United Airlines Logo
4:10 pm - 5:29 am
BIL
-
SJU
11h 19m
2 stops
United Airlines Logo
1:40 pm - 9:17 pm
SJU
-
BIL
9h 37m
1 stop
$770United Airlines
Mon, Sep 28 - Wed, Sep 30
United Airlines Logo
2:29 pm - 2:44 pm
BIL
-
SJU
22h 15m
2 stops
United Airlines Logo
1:00 am - 12:59 pm
SJU
-
BIL
13h 59m
2 stops
$836United Airlines
Wed, Jul 29 - Sun, Aug 2
United Airlines Logo
5:00 am - 5:38 pm
BIL
-
SJU
10h 38m
1 stop
United Airlines Logo
1:40 pm - 9:17 pm
SJU
-
BIL
9h 37m
1 stop
$882United Airlines
Thu, Jun 4 - Mon, Jun 8
American Airlines Logo
1:33 pm - 11:02 am
BIL
-
SJU
19h 29m
2 stops
American Airlines Logo
5:30 am - 11:15 pm
SJU
-
BIL
19h 45m
1 stop
$936American Airlines
Wed, Jun 24 - Tue, Jun 30
American Airlines Logo
1:33 pm - 9:39 am
BIL
-
SJU
18h 06m
2 stops
American Airlines Logo
6:01 am - 11:15 pm
SJU
-
BIL
19h 14m
2 stops
$961American Airlines
Booking Insights

KAYAK's insights & trends for Billings to Luis Munoz Marin Intl flights

Get data-powered insights and trends into flights from Billings to Luis Munoz Marin Intl to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Billings to San Juan?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Billings to San Juan were found on American Airlines ($642) and United Airlines ($701).

Good to know

Cheapest flight$642
Flight from Billings to San Juan

When to book flights from Billings to Luis Munoz Marin Intl

Are your dates flexible? Find out the best times to travel from Billings to Luis Munoz Marin Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Billings to San Juan flights

  • What is the cheapest flight from Billings to San Juan Luis Munoz Marin Intl Airport?

    In the last 3 days, the lowest price for a flight from Billings to San Juan Luis Munoz Marin Intl Airport was $642 for a round-trip ticket.

  • Do I need a passport to fly between Billings and San Juan?

    A passport is required to fly from Billings to San Juan.

  • Which aircraft models fly most regularly from Billings to San Juan?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Billings to San Juan?

    Star Alliance is the only airline alliance operating flights between Billings and San Juan.

  • How does KAYAK find such low prices on flights from Billings to San Juan?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Billings to San Juan.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Billings to San Juan?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Juan from Billings is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Billings to San Juan?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Juan with an airline and back to Billings with another airline. Booking your flights between Billings and SJU can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Billings to San Juan?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Juan from Billings up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Billings to Luis Munoz Marin Intl

 
See real verified KAYAK customer reviews for airlines flying from Billings to San Juan. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Billings to Luis Munoz Marin Intl? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9748 reviews
7.7Boarding
6.6Food
8.1Crew
7.3Comfort
7.1Entertainment
Airline reviews

Very comfortable seating and the Flight staff were very attentive. The premium economy section that I was seated in was very clean, updated, and well appointed. I would highly recommend flying United Airlines as this experience was better than the Japan Airlines business class that I flew several months ago.

10.0 ExcellentAnonymous, May 2026
SEA - HND
Read more United Airlines reviews

Very comfortable seating and the Flight staff were very attentive. The premium economy section that I was seated in was very clean, updated, and well appointed. I would highly recommend flying United Airlines as this experience was better than the Japan Airlines business class that I flew several months ago.

Our flight was canceled same day and we were never informed. Had to pay more and worse seating on another airline.

Our flight to Rome, Italy was cancelled the day of and we were never informed. We only found out because I was trying to get into my husbands account and called to get his account number. Had to pay more for worse seating on another airline.

My service dog and I were asked to deplane just before they closed the door - clearly very last minute they couldn’t find the documentation that I have filled out many many times before that is for flying service animals. I purposely purchase 3seats (a whole row) since he is large and not all passengers want to sit next to a dog on a cross country flight. The plane departed with my husband on it!!! They made me fill out a hard copy of the same form and had to reschedule me on a later flight where they could find 3 seats together!! I’ve done this so many times before - clearly the error was on their part in a technology glitch - but really people - do better!! Very traumatic - and my husband had to wait for us when he landed ….so bad. Poor pup was confused and tired.

First class ticket gets you no seat back entertainment? I have to bring my own laptop to see a movie? And most of their movies have ADS? No thank you. Worse: Tiny snacks only on a 2 hr flight?

Late- that’s what United does best. Missed my connection, rebooked to a flight 17 hours later and had to spend $500 on a hotel. What did I get? A $15 meal voucher. What can you get in an airport for $15. I hate United so much.

Late plane. Only one crew on the ground so we b had to wait for Denver flight to come in, board, and depart. At 78 yrs of age I was not pleased trying to get my connection. What really made me angry was the notification you sent me to hurry up or I would miss my connection. Why tell me to hurry up when you got me in late. It was not a good way of treating customers.

No complaints other than luggage carousel was incorrectly guiding passengers to the wrong carousel on the screen.

Did not like that we couldn't complete check in on-line without providing pictures of our passports. Worry about identity theft. We had no delays and boarding was handled In an efficient manner.

We were a little disappointed to not be able to complete check in online without uploading pics of passports. Also we have KTN's and they weren't on our boarding passes when we got to security. Had to trek back to counter to have them fix.

Everything you need to know for your flight from Billings to Luis Munoz Marin Intl

Information on your arrival and departure airports